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  1.  42
    On the manner in which crossbreeding takes place in bacteriophages and bacteria.Nils Aall Barricelli - 1955 - Acta Biotheoretica 11 (2):75-84.
    In order to explain several discrepancies between the gene-recombination phenomena in phages and in higher organisms, we assume that theT 2 phage, after entering the bacterium, divides in three parts corresponding to the three “chromosomes' whichHershey andRotman have traced in this phage. The three parts are supposed to be able to divide further by rupture or by the action of other “chromosome fragments”. Each fragment is supposed able to reproduce inside the bacterium as a more or less independent unit and (...)
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  2. Numerical testing of evolution theories.Nils Aall Barricelli - 1962 - Acta Biotheoretica 16 (1):69-98.
    An interpretive system for the IBM 704 computer permitting interpretation of the genetic pattern of a numeric symbioorganism as a game strategy has been developed. Selection for best performance in a simple game has been applied in a preliminary experiment. An objective method to measure the quality of a game played is described. The results presented in the article show a small but significant improvement of game quality during a period of 2300 generations.The general characteristics of the phenomena observed are (...)
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  3.  33
    A “chromosomic” recombination theory for multiplicity reactivation in phages.Nils Aall Barricelli - 1956 - Acta Biotheoretica 11 (3-4):107-120.
    With the assumption of inactivation of small traits in bacteriophages “chromosomes” by ultraviolet irradiation the probability of multiplicity reactivation of irradiated phages is calculated. The result appears to be in agreement with the experimental results ofDulbecco.In the mathematical treatment of the problem a distinction is made between ordinary genes, with probability of inactivation negligible relative to the probability of inactivation of the whole phage, and a few vulnerable centers or genes whose probability of inactivation is not negligible. The hypothesis of (...)
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